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प्रश्न
When two quantities x and y are in ______ proportion or vary ______ they are written as `x oo y`.
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उत्तर
When two quantities x and y are in direct proportion or vary directly, they are written as `x oo y`.
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संबंधित प्रश्न
Following are the car parking charges near a railway station upto
| 4 hours | ₹60 |
| 8 hours | ₹100 |
| 12 hours | ₹140 |
| 24 hours | ₹180 |
Check if the parking charges are in direct proportion to the parking time.
The amount of extension in an elastic string varies directly as the weight hung on it. If a weight of 150 gm produces an extension of 2.9 cm, then what weight would produce an extension of 17.4 cm?
The amount of extension in an elastic spring varies directly with the weight hung on it. If a weight of 250 gm produces an extension of 3.5 cm, find the extension produced by the weight of 700 gm.
6 men can complete the electric fitting in a building in 7 days. How many days will it take if 21 men do the job?
A dozen bananas costs ₹ 20. What is the price of 48 bananas?
If x = 5y, then x and y vary ______ with each other.
Two quantities x and y are said to vary directly with each other if for some rational number k, xy = k.
It is given that l varies directly as m. Write an equation which relates l and m.
From the following table, determine if x and y are in direct proportion or not.
| x | 1 | 4 | 9 | 20 |
| y | 1.5 | 6 | 13.5 | 30 |
Kusum always forgets how to convert miles to kilometres and back again. However she remembers that her car’s speedometer shows both miles and kilometres. She knows that travelling 50 miles per hour is same as travelling 80 kilometres per hour. To cover a distance of 200 km, how many miles Kusum would have to go?
